Ludger e



. Feb. 3, 1931;

L. E. LA BRlE BRAKE OPERATING MEANS Filed May 6, 1927 "nu/111 IIlIIII/IIIIII/III!!!III/IIlIIIIII/I lNVENTOR LUD R ELABRIE a ATTORNEY Patented Feb. 3, 19 31 UNITED STATES PATENT orries LUDGER E. In BRIE, or soon: BEND, mnnuta, assrenon To nnnmx BRAKE comrm, or cmcaeo, rumors, a. conrona'rron' or rumors naaxn-ornmme mus Application filed May 6, 1927. Serial 1T0.- 182,224.

This invention relates to brakes and is illustrated as embodied in novel operating means for an internal expanding automobile brake. An object of the invention is to prov vide a very simple mounting for a brake-ap-.

the brake-applying thrust aids in causing the shifting of the bracket or its equivalent to bring about the desired automatic centerm The above and other novel and desirable features of construction will be apparent from the following description of the illustrative embodiment of the invention shownin the accompanying drawing, in which:

Figure 1 is a vertical section through the upper part of one front wheel and associated arts; p Figure 2 is a vertical section through the brake just inside the head of the brake drum, and on the line2-2 of Figure 1- showing the brake shoes in side elevation; and

Figure 3 is a partial section on the line-3-3 of Figure 2 showing the mounting of the aboveidentified bracket. In the arrangement selected for illustration the brake includes a drum 1O rotating with a wheel (not shown) mounted on a front wheellknuckle 12 swivelled by a kingpin 14 or the like at one end of a front axle 16. The drum 10 is closed at its open side by a suitable stationary backing plate 18. The brake proper includes brake shoes 20 applied against the resistance of suitable return springs 22 by means such as a double cam 24 herein illustrated as integral with a camshaft 26. Shaft 26 is rocked to apply the brake by a crank or arm 28 having its lower end flattened to form a spade portion engaged by an integral ball 30 on one, end of an operating lever 32 fulcrumed on the axle 16.. The center of the ball 30 is arranged,

bracket 34.

when the drum is applied, in or immediately adjacent the swivelling axis of the wheel.

According to an important feature of the present invention, the cam-shaft 26 or its equivalent is 'journalled in a novel bracket 34 preferably having an arm portion 35 extending laterally along a chord of the drum both arm and lever 32 lyingto one side of the cam shaft The bolt or stud36 passes through a slot 38 in the backing plate 18 and is provided with a nut 40 compressing a frictionwasher 42 against the backing plate 18. Backing plate 18 is likewise enlarged at 35' to accommodate lateral movement of the It will be seen that, when the brake is applied, the thfust of the lever 32 against the crank 28 is away from the attaching bolt 36, so that there is no tendency to shift the bracket in any direction except along a chord of the brake drum. The pressure 0 the cam .24 on the ends of the shoes 20 will cause the shifting of means 40 and 42 to center the cam 24 when the brake is applied.

While one' illustrative embodiment has been described in detail, it is not my intention to limit the scope of the invention to that: particular embodiment or otherwise than b the terms of the appended claims.

1 I claim:

1. Brake-operating mechanism comprising, in combination, an applying device movable in all directions in the plane of the support, an operating member exerting thrust on the applying-device, a support for the ap plying device, and means for frictionally clamping the support only on the side of the applying device opposite that toward which said thrust is directed, in such a manner as to permit the applyin device to shift to cen-- ter itself when the bra e is applied. I

2. A brake comprising, in combination, a drum, a. backing plate, friction means engageable with the drum, an applying device for the friction meanshaving a support extending through and movable in all directions in said orificewith .a portion of said support extending substantially along a chord of the drum, and a single attaching bolt for said support arranged at the end of said portion and securin it to'the backing late, the bolt passing t rough a relativel arge opening to permit the supportto ski along said chord. 1

In testimony whereof, I

signed my name.

have hereunto. 4

n :r: ER E. LA BRIE 

